In this work, the thermally stable magnetic poly(urethane-imide) nanocomposite (β-CDPUIm-MNPs (9)) was prepared by reaction of β-cyclohexatriene with diisocyante (5) as a new synthetic cross linker agent and its adsorption behavior for removal of heavy metal ions from water was examined and compared with bare poly(urethane-imide). This poly(urethane-imide) based nanocomposite was employed for the removal of Pb(II) and Cd(II) metals from the waste water for the first time and it has proved to have an excellent efficiency probably due to the presence of nitrogen and oxygen atoms in the imide ring. β-CDPUIm-MNPs (9) displayed highly effective adsorption performance to lead and cadmium and showed maximum adsorptions during 20 min. For optimization of lead and cadmium ions adsorption, the effects of different factors like pH, contact time, and initial amounts of Pb(II) and Cd(II) ions were studied. Results showed that pH has a great influence on the adsorption behavior and also maximum adsorption capacity was obtained at pH 7. Examination of the isotherm and adsorption kinetics showed that equilibrium adsorptions and kinetic are well-modeled by applying Langmuir isotherm model and pseudo-second-order kinetics, respectively. The maximum adsorption capacities of β-CDPUIm-MNPs (9) for Pb(II) and Cd(II) ions based on Langmuir isotherm calculation were 344.830 and 303.030 mg/g, respectively. Regenerated β-CDPUIm-MNPs (9) were used as adsorbent and show high adsorption capacity without any reductions of magnetic intensity and aggregation of adsorbents under five repeating cycles.

在这项工作中，通过β-环己三烯与二异氰酸酯（5）反应作为新的合成交联剂，制备了热稳定的磁性聚（氨基甲酸酯-酰亚胺）纳米复合物（β -CDPUIm-MNPs（9）），并对其吸附行为进行了研究。研究了从水中去除重金属离子的方法，并将其与裸露的聚氨基甲酸酯酰亚胺进行了比较。这种基于聚氨基甲酸酯-酰亚胺的纳米复合材料首次用于去除废水中的Pb（II）和Cd（II）金属，事实证明它具有出色的效率，这可能是由于氮和氮的存在。酰亚胺环中的氧原子。β-CDPUIm-MNPs（9）对铅和镉显示出非常有效的吸附性能，并且在20分钟内显示出最大吸附量。为了优化铅和镉离子的吸附，研究了pH，接触时间以及初始Pb（II）和Cd（II）离子等不同因素的影响。结果表明，pH对吸附行为有很大的影响，并且在pH 7下也获得了最大吸附容量。对等温线和吸附动力学的研究表明，采用Langmuir等温线模型和拟秒-二次法可以很好地模拟平衡吸附和动力学。分别订购动力学。根据Langmuir等温线计算，β -CDPUIm-MNPs（9）对Pb（II）和Cd（II）离子的最大吸附容量分别为344.830和303.030 mg / g。再生的β -CDPUIm-MNPs（9）用作吸附剂，在五个重复循环中显示出高吸附容量，而磁强度没有任何降低，吸附剂没有聚集。